HSZ18H424ZMO
SEA BREEZE+ · HP - Mini or Multi Split
18–22BTU/Wh
8.9–11.2BTU/Wh
16000–18000BTU/hr
Yes
SEA BREEZE+ HSZ18H424ZMO: SEER2 22 BTU/Wh, around the middle of the range for air-source heat pumps (category median 20 BTU/Wh).
Where this model sits
The SEA BREEZE+ HSZ18H424ZMO is a 18000 BTU/hr hp - mini or multi split using R-410A, a refrigerant with high global warming potential (GWP 2088). At 22 BTU/Wh it ranks around the middle of the 12,218 certified air-source heat pumps models. Among similar-sized air-source heat pumps (within 10% of its size), it is more efficient than the peer median of 21 BTU/Wh. In this size range, comparable Midea models average 21.4 BTU/Wh and TOSOT models average 21 BTU/Wh.
Specifications
| Efficiency | |
|---|---|
| SEER2 (best combination) | 22BTU/Wh |
| SEER2 (worst combination) | 18BTU/Wh |
| HSPF2 (best combination) | 11.2BTU/Wh |
| HSPF2 (worst combination) | 8.9BTU/Wh |
| EER2 (best combination) | 13BTU/Wh |
| COP at 5 °F | 1.93 |
| Capacity | |
| Cooling Capacity (max) | 18000BTU/hr |
| Cooling Capacity (min) | 16000BTU/hr |
| Heating at 47 °F | 20000BTU/hr |
| Heating at 17 °F | 15600BTU/hr |
| Heating at 5 °F | 17700BTU/hr |
All 25 specifications
| Configuration | |
|---|---|
| Product Type | HP - Mini or Multi Split |
| Compressor Staging | Continuously variable |
| Cold Climate Certified | Yes |
| Connected Capability | No |
| Series | HS series |
| Indoor-Unit Combinations Rated | 6 |
| Refrigerant | |
| Type | R-410A |
| GWP Rating | R-410A (GWP:2088) |
| Identifiers | |
| Model Number | HSZ18H424ZMO |
| ENERGY STAR ID | ES_1108715_HSZ18H424ZMO_02282025032224_29212595653 |
| Partner | International Refrigeration Products |
| Date Certified | 2026-06-13 |
| Available From | 2025-02-28 |
| Markets | United States, Canada |
Documentation
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